GE 45142 Choice-Alert Wireless Door/Window Alarm System 

User Review:

"I just got done installing the Choice Alert system in our 1600 square foot split foyer. The components include the control center, one signal booster, one extra siren module, 3 door/ 3 window sensors, one garage door sensor, one signal repeater, and one motion sensor. Obviously, I don't yet have much experience with its performance, but I thought I'd share some installation thoughts. 
Certainly the biggest problem is- what keeps an intruder from just unplugging/ taking the batteries out/ or just smashing the control center? The warning beeps in the "away" mode are obvious enough and give the intruder enough time to home in on the sound. My "Hack"? I just opened the Control Center and snipped the wires to the beeper/ siren. It works just fine like that, and it is totally silent until the siren module goes off. The upside of doing this is obvious, the downsides are- 1. You don't get the short beep when a door or window is opened when it is not armed (although I actually think that's a plus). 2. You don't get the warning beeps when you come home- if you forget, it will go off. 3. You have to buy a siren module. 4. I suspect GE would void the warranty. 5. You could mess up and snip the wrong wires. 
If you decide to try it, here's what I did. I took the 3 screws on the back plus one in the battery compartment out. At that point I still could not completely open it up- the right side would not release. I pried the back open about an inch on the left side and examined it with a flashlight. After being pretty sure I had the right wires (2 brown ones that disappear into the beeper module) I snipped them with a pair of scissors. I then tested it and I got exactly what I wanted- total silence until the alarm sounds. I installed the siren module on top of our kitchen cabinet and ran the wire from the plug outlet used for our over-the-range microwave (my wife's idea). It is completely out of view. 
All of the sensor modules seem to work as advertised. The most difficult part of the installation is getting the two sensor parts properly aligned on the doors. It would be nice if GE would include some shims to raise the small part off of the door, but the don't so I had to cut some pieces of wood. 
All in all, I think the hacked system is a reasonable value for the money- the sensors seem to work well and the siren would certainly scare someone off. The non-hacked version has such a big problem with it giving the intruder 45 seconds to disarm it I would be hard pressed to recommend it. "